package cn.tedu.web.servlet2;

import cn.tedu.web.sww.JdbcUtils;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
import java.io.PrintWriter;
@WebServlet(urlPatterns = "/login")
public class LoginServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        String username = req.getParameter("u");
        String password = req.getParameter("p");
        System.out.println("username="+username);
        System.out.println("password="+password);

        String code = req.getParameter("c");

        HttpSession session = req.getSession();
        Object ccc = session.getAttribute("CCC");

        boolean isTrue = code !=null && code.equals(ccc);
        if(!isTrue) {
            PrintWriter writer = resp.getWriter();
            writer.write("code is error");
            writer.flush();
            writer.close();
            return;
        }


        String sql = "SELECT id  FROM `user` WHERE username= ? AND `password` = ?";
        Integer id = JdbcUtils.select(sql,Integer.class,username,password);
        if(id != null && id > 0){
            session.setAttribute("UID",id);

            resp.sendRedirect("/sww/index.jsp");
        }else{

            resp.sendRedirect("/sww/login.jsp");
        }

    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doGet(req, resp);
    }
}
